Furnace fire-door.



2 SHEETS-SHEET I.

Patente Feb. 1, 1910 G. H. GREGORY. UBHACB HBH ESGE.

nummer? NLE acme, 190s.

G. H. GREGORY.

FURNACE FIRE DOOR. APPLIGATKQR rum ocre. 190s.

Patented Feb.1,191'0 ill- Hnge/y "enrrnn s'riifrns PATENT orgies..

GEORGE H. GREGORY, OF MOUNT CARDITSL. ILLINOIS.

Y PURNACE Fins-noon.

essere To al? whom it. may concern:

Be it. known that l, GEORGE H. Gnnoonr, n citizen of the United States, residing at Mount Carmel, in the county of Yalmsh. :unl State of illinois, lmveinvented ner.y and useful Improvements in 'Furnace iie-Boois,

of which the ollowingi's :i specification.

This invention relates to improvements in fire floors and ineens for #sperling the saine,

the object. of the im'enion being,Y to piovide an improved fire door which automatically mores to closed position b v gravity, a=

further oliiect being io provide ineens for renali Y opening the door, the said invention 'consisting in the constructionI. combination and srmngenient of e'vices hereinafter describerl and claimed. v

In the accompanying drawing:

door :incl operating means therefor, constrncterl in accordance' with my invention.- Figzb is o detail vertical sectional View of the fire door, on the plane indicarmi hy the line a-a of Figi l. P is a. Siria elevation of' my' inipiu-neelA fire gor and operating menus Lherefor et rigin io Fig. l. Fig. e'. e derail perspective View of the pivotallj; :nounted'ernis which carry 'the leaves of lthe' door, also showing 'the linlr which connects said arms and n portion. of the link which connects the operating levers to the upper arm.

Mg? improved re door comprises e lower: leaf or member 1 and en upperA leaf or meznber 2, both -of which operate in vertically dispersed guide' ways which are provided on the front of the furnace indicated et. fi.

. The -ripper leef is hea-vier than the lower additional Weight.v

lef and is here shown'as thicker than the lower leef in order to give it the required Trie.lowerV anfi upper 'leaves are res ctiifely providecl on their outer sides Wit, horizontnlly'disposeil track Wys-r-G, each 'of which io here shown as of angle form cross sectionally-proviin'g a vertical web bearing on anzi secured to one of the leeres and an upperoutwardly extending horizontal web. Y A 'pair o arms 7, 8 are pirotslly mounted as at 9-1Q resnecively on the front. o

.the ferner/es, 'saiarms extending acrossone of tliegiiide Wag-is and peril); across the doors "smi being. respectively rovidmi at nl' irse' inner ends with M .,ersll, 12,

A Figure 1.1 is n. front elevation of e, self-closing fire- Sneceation of Letters Yatent.

Application leri ctcber i9, `1903*. Serial No. 521,847.

Patentes 1,1910.

which respective@ heir under the horizon tal webs of the angle track-Ways oi' the door lesi'vcs or members. The said armsv are conY necred together by :i link 13, the pivot counections between the saicllink and thesnid erm being,t on opposite sides and et :i suitable, distance from the pivots 9, 1Q, en

rfhich snid-nrms are. mounted so that' the .seid link `while connectinglihe said arms together cau-ses them t0 movesimultaneously in 'reverse directions.

A foot lever lli is pivotallymounted us et i5 on one sicleof e. etauclaril 1G and is connected by'a link l? to the shorter :lini of a. link lever 1S, which is fulcruinedns et. 3 9 to a standard 20.-

linl; lever 21 1s pivotally connected as at. 2:2 to the standard 16 and is connected :it an intermediate point bv a. link 23 to the lower firm of the link lever i8. A link 24 connects the link lever on the lever 3.4 causing the latter through its eonneetions liereinbeoie described, which,

in effect, forms e. compound leser, to'lower the outer end of the' arm 8so es to vdispose said in inclined position snel. in. so doing cerise said arm bi ,reason of its connection Vwith the upper oor'nember to raise said -epper door member, the linlf: 13 and the lower arm 7 simultaneously acting to lower the lower door member and hence open the door members as shown in doted lines in i Fig. L After stoking, ybhe fireman removes 'his foot from `the lever 14 and thereupon the upperdoor member by its'superioyr weight, descends ,and in so doing causes 'the connecino tions between il; and-the lighter Alower door 'member to raise thelatter' and hence the door autonieticall closes.-

lVhat' 1s cleime iszz mounted for sliing movementineaidlgiide A A furnace having *alcloorvop@ningandver ticalgmdewevs. e pair of iiredoor membersl Mm-v 19.1" thv upper dum' member boing heavier l connections bdween the latr and one of mvmwl- Emving :1 track wily. :i pnix of arms piwmiiy mmmtvd m1 the flu-naw :xml each having :x mlhi engaging m10 nf the track zich ui' the duur nwn.h01'. .:1 link comwving said :arms tug'chm' fmqimultnncous moveim-m in revel-. 0 directions, n font lever and i g l said arms. 'I

In testimony whereof I :ifix my signaturel in presence of two Witnesses.

GEGRGE H. GREGORY. XTtiiesses:

ETHEL D.V R10-G,` Z.,S. RIGG. 

